Data warehouse question paper

  • How does the data warehouse handle queries?

    Typical data warehouse queries are usually generated by on-line analytical processing (OLAP) or data mining software components.
    They show an extremely complex structure and usually address a large number of rows of the underlying database..

  • What is data warehouse research paper?

    A data warehouse is a “subject-oriented, integrated, time- varying, non-volatile collection of data that is used primarily in organizational decision making.”1 Typically, the data warehouse is maintained separately from the organization's operational databases..

  • Data warehousing is a consolidated view or an approach to electronic data storage in an organization.
    Data warehousing basically consists of electronic data management by way of storage, retrieval and distribution.
    In this process, the optimized data for reporting and analysis is filed in an electronic system.
a) Define Data warehouse? Discuss Design principles. 5M b) Write in brief about schemas in multidimensional data model. This question is a bit longer than the.
QUESTION BANK (DESCRIPTIVE). Page 2. QUESTION BANK 2019. DATA WAREHOUSING AND DATA MINING. Page 2. UNIT –II. 1. a) Define Data warehouse? Discuss Design 

What is the difference between data warehouse testing and software testing?

Unlike software testing, which primarily focuses on the program code, data warehouse testing is intended for data

The main issue in the data warehouse testing is to be acquainted with the data and the responses to queries [ 13 ]

Methodologies of data warehouse testing are incremental

What is the difference between operational data and data warehouse?

Every key structure in the data warehouse Contains an element of time, explicitly or implicitly But the key of operational data may or may not contain time element

1

A physically separate store of data transformed from the operational environment

2

Operational update of data does not occur in the data warehouse environment


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